<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        /* 两边都为true，结果才为true 
           1.遇到false的情况，直接返回
        */
        console.log("abc" && 10)  // 10
        console.log(0 && "abc")   // 0
    </script>
</body>
</html>